ASTROSAT CZTI

Data Quality Report

Orbit 59073

Creation date: 2026-08-28T22:50:51.376537
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A14_004T02_9000006600_59073cztM0_level2.fits modeM0/AS1A14_004T02_9000006600_59073cztM0_level2_quad_clean.evt
Size (bytes)1,470,490,560114,770,880
Size1.4 GB 109.5 MB
Events in quadrant A8,578,013909,434
Events in quadrant B5,621,4841,056,205
Events in quadrant C12,014,019731,879
Events in quadrant D27,403,18746,061

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0326121
B0241841
C0430671
D0883121

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02120
B02120
C02120
D02120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10557124611.802595%
B105583032.869862%
C10558278926.415988%
D105571007595.434309%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 10672 10558 1123 1123 10.52% 10.64%
B 10673 10559 160 160 1.50% 1.52%
C 10673 10559 1879 1879 17.61% 17.80%
D 10671 10556 9920 9920 92.96% 93.97%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 7 64 3321467 12321.41 1092 1065 269.5
A 0 24 215732 796.59 1092 1065 269.5
A 13 248 177693 655.43 1092 1065 269.5
B 4 171 335778 1372.3 1134 1091 243.9
B 4 236 305608 1248.6 1134 1091 243.9
B 5 185 119190 484.24 1134 1091 243.9
C 15 198 5383019 19692.7 995 985 273.3
C 12 252 1703352 6228.91 995 985 273.3
C 12 250 467966 1708.67 995 985 273.3
D 12 1 25373452 361668.76 240 228 70.2
D 6 239 356862 5083.44 240 228 70.2
D 11 129 181411 2582.57 240 228 70.2

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter

TCT plots

Parameter TCT0 TCT_healed
Tct